Station Maps for the Occultation by (138) Tolosa at Sunday, 2009 November 08 (~ 18:43 UT)

WEST and EAST

Magnitude of target star 2UCAC 35510128 : 12.5 mag
UCAC instrumental „pseudo-R“ fit-model magnitude: 12.6 mag (data from UCAC3)

In the case of an occultation, the combined light of the asteroid and the star will drop by 0.5 mag to 11.8 mag (the magnitude of the asteroid).

The max duration is expected to be 4.1 sec.
The event will take place at an altitude of  28 deg and at azimuth 94 deg. The sun will be at an altitude of -32 deg. (At predicted centre line for longitude E 15 deg)

There is a 1 sigma uncertainty interval of  ± 0.68 path widths.
The probabilities to see a positive event:

Centre line: ~ 54 %
Path limits: ~  43 %
1 sigma lines:  ~ 15 %
2 sigma lines: ~ 1 %

(Calculation according to Raymond Dusser, E.A.O.N. Circular #10)

PLEASE REMEMBER: Predictions are sometimes wrong. Please observe even with a small probability.
Let other observers know about you observing plans: Announce you station with OccultWatcher !

More information (coordinates, finder charts) at Steve Preston’s prediction:
http://asteroidoccultation.com/2009_11/1108_138_22691.htm

Table of potential observing stations and cities with distance from center of predicted path (Derek C. Breit):
http://www.poyntsource.com/New/Google/20091108_22691_Sites.txt

Map and Coordinates at the web page of  E.A.O.N. :
http://astrosurf.com/eaon/Occultations%20November.htm

Good luck with your observation!

Oliver Klös

IOTA-ES